/Engine/Source/Developer/TraceServices/Public/TraceServices/Model/MetadataProvider.h
void EnumerateMetadata ( uint32 InThreadId, uint32 InMetadataId, [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< bool(uint32 StackDepth, uint16Type, const void *Data, uint32 Size)> Callback ) const